Table 1.

Results of ANSI S3.22 (2003) measures

	Left		Right
	Mean (SD)	Range	Mean (SD)	Range
Average gain	24.69 dB (9.315)	7 – 53 dB	24.39 dB (8.967)	7 – 47 dB
Average OSPL	97.42 dB (6.758)	68–118 dB	97.47 dB (6.421)	80–119 dB
Maximum OSPL	104.81 dB (6.5 dB)	86 – 124 dB	104.80 dB (6.71 dB)	92 – 125 dB
Frequency range	212.99 – 6692.48 Hz	200 – 8000 Hz	217.13 – 6596.32 Hz	200 – 8000 Hz
Total Distortion
500 Hz	0.72 %	0 – 7 %	0.72 %	0 – 7 %
800 Hz	0.48 %	0 – 5 %	0.48 %	0 – 5 %
1600 Hz	0.58 %	0 – 23 %	0.58 %	0 – 23 %

OSPL = Output Sound Pressure Level at 90 dB